(x+21)+(2x+9)=60

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Solution for (x+21)+(2x+9)=60 equation:


Simplifying
(x + 21) + (2x + 9) = 60

Reorder the terms:
(21 + x) + (2x + 9) = 60

Remove parenthesis around (21 + x)
21 + x + (2x + 9) = 60

Reorder the terms:
21 + x + (9 + 2x) = 60

Remove parenthesis around (9 + 2x)
21 + x + 9 + 2x = 60

Reorder the terms:
21 + 9 + x + 2x = 60

Combine like terms: 21 + 9 = 30
30 + x + 2x = 60

Combine like terms: x + 2x = 3x
30 + 3x = 60

Solving
30 + 3x = 60

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-30' to each side of the equation.
30 + -30 + 3x = 60 + -30

Combine like terms: 30 + -30 = 0
0 + 3x = 60 + -30
3x = 60 + -30

Combine like terms: 60 + -30 = 30
3x = 30

Divide each side by '3'.
x = 10

Simplifying
x = 10

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